Dust-collector



(No Model.)

0. N; SMITH.

DUST GOLLEGTOR.

N0.j390,100. Patented Sept. 25, 1888.

u. PETERS. Pholo-L'nhcgnphur. Washinghwn. n. c.

UNITE STATES CHRISTIAN N. SMITH, OF DAYTON, OHIO.

DUST-COLLECTOR.

SPECIFICATION forming part of Letters Patent No. 390,100, dated September 25, 18 88.

Application filed March 13, 1888. Serial No. 267,108. (No model.)

To all whom it may concern:

Be it known that I, CHRISTIAN N. SMITH, of Dayton,in the county ofMontgomery and State of Ohio, have invented certain new and useful Improvements in Dust-Collectors, of which the following is a specification.

The object of my invention is to provide a novel dust-collector which will completely separate the dust from the air and deposit the dust in a box or other suitable receptacle and discharge the purified air back into the room or compartment from which it was taken.

Another object of myinvention is to provide a novel dust-collector which can be run with little power. and require a small amount of air to effect the operation of collecting the (lust, separating it from the air, and depositing it in a suitable compartment.

The invention consistsin the features of construction and combination of devices, hereininafter described and claimed, reference being had to the accompanying drawings, making a part of this specification, in which Figure 1 is a central vertical section on the line y 1 Fig. 2. Fig. 2 is a vertiealseetion on the line 22, Fig. 1. Fig. 3 is adetail section. Fig. 4 is a detail front elevation. Fig. 5 is a detail of one of the central partition disks. Fig. 6 is'a detail sectional view showing a modification.

1 represents an inlet-spout ordust-eonveyer in which the fan or blast is usually located (but which fan is not shown in the drawings,) for driving the current of air into the shell or casing 2, in which two circular chambers, 4, are formed, one on each side of theinletspout.

3 represents a curved dust-spreader situated within the casing between the chambers 4 and under the point where the dust-laden air is received. It is of V shape in cross-section, as shown in Fig. 3,the curve projecting around, so as to serve as a guide to direct the dust to the outer periphery of the chambers 4.

' 5represents segmental sections of the chambers, forming the lower walls thereof. These sections are broken at the point 6, and preferably project within the terminal edge of case 2 at the point 7. The object of these openings 6 is to allow the escape of the dust which hugs or moves along the periphery of the chambers 4 near the outer side walls, as indicated by the I of the dust to prevent the exit of air, thus holding the spout 10 full of accumulated dust. As the weight of the dust accumulates, the valve 12 will open sufficiently to allow it toeseape, thus keeping the spent 10 under seal against the escape of air in that direction,causing all the air to return through the opening 9 (into the casing.

In order to discharge the purified air out of the chambers,I have provided at the center of the outer wall of each chambera circular opening, 14, having a circularinwardly projecting and flaring wing, 15. As the dust in the current of air is heavy, it is projected farther forward under the pressure until it strikes against the outer side walls of the ehambers,where it is held by centrifugal force and prevented from escaping with the currents of purified air through the opening 14 by means of the wings 15, so that the air will pass out of the opening 14,while the dust will project into the recess 16 between the wings 15 and the sides of the casing 2.

17 represents circular disks of the form shown in Fig. 5,with a portion, 18, cut away, into which the \I-shaped spreader and spout are placed. The disks 17 constitute the inner walls or sides of the chambers 4.

The principle of operation of my device is as follows: A blast is driven into the spout 1, which sucks or drives in the dust into the compartment where the device is located, the spreader 3 directing it against the sides of the chambers 4. The dust,being heavier, is thrown outward in contact with the side walls and periphery of the chambers 4, as indicated by dotted line 8. The open space 6 between thesegment 5 of the chambers and the casing at 7 allows the escape of dust. Thelower end of the spout 10,being closed by theaceumulation of the dust in the bottom, prevents the escape of air therefrom, and it is drawn back in the ease through the opening9and escapes out ofthe central orifices, 14:, on either side of the partitions 1 7. The space between these partitions being a deadspace, the bottom may be closed,if desired. If any dust should be carried back through the opening, it will go around the exterior space and into the current through the spout. By having the opening 6 near the periphery of the disk and making it comparatively small the dust will principally go out at that point. A portion of the blast, however, will be carried around inside of the segments 5 and join the main current again. Some of the separation takes place below the segments 5 within the spout 10, where said separation occurs by gravity in a space where comparatively a small amount of current exists. The segments 5 materially cut off the action of the blast within the spout 10.

The recesses 16 at the sides of the wings 15 prevent the dust from escaping out of the apertures 14, as before explained. The modification shown in Fig. 6 consists in introducing the spout mostly outside of the circle of the case and enlarging the case-opening, as at 19, and carrying the spreader 3 near the outside of the case; also, in changing the form of the segments 5 by depending one end down, as at 20, to insure the dropping of the dust out of orifice 6 and allowing it to go back into the case through orifice 9.

Having thus described my invention,what I claim is- 1. A dust-collector consisting of a casing divided into two side chambers, each having its outer side provided with an exit-orifice, 14, an inlet-spout, 1, entering the casing between said chambers, an air-spreader, 3, located between the chambers,to divert the air and dust thereinto, and the segments 5, constitutingthe lower walls of the chambers and having the exit and re-entering orifices 6 and 9 atthe respective ends, substantially as described.

2. A dustcollector consisting of a casing divided into two side chambers, each having in its outer side an air-exit orifice, 14, provided with an inwardly-projecting circular wing, 15, an air inlet spout, 1, entering the casing between said chambers, an air-spreader, 3, located between the chambers, to divert the air thereinto, and segments 5, constituting the bottom walls of the chamber and having the exit and re-entering orifices 6 and 9 at their respective ends, substantially as described.

3. A dustcollector consisting of a casing divided into two circular chambers, each having in its side an air-outlet, 14, provided with an inwardly-projecting flaring wing, 15, to form a recess, 16, an air inlet spout, 1, entering between the chambers, to pass air thereinto,:tnd segments 5, constituting the bottom walls of the chambers and having the exit and re-entering orifices 6 and 9 at their respective ends, substantially as described.

In testimony whereof I have hereunto set my hand.

CHRISTIAN N. SMITH.

Witnesses:

ROBERT ZAHNER, J. WA'rso'N SIMs. 

